Gas-purifying apparatus.



H. DICKE.

GAS PURIFYING APPARATUS.

APPLICATION FILED DEG..6, 191s.

1,129,55, Patented Feb. 23, 1915.

##omrey away by the gases,

nnrrnn STATES PATENT \GFFIGE.

HUGO DICKE, OF BERLIN-WILMERSDORF, GERMANY, ASSIG-NOR TO BERLIN-ANHALTISCHE MASCHINENBAU-AKTIEN-GESELLSCHAFT, OF BERLIN, GER,- MANY, ACORPORATION OF GERMANY.

GAS-PURIF'YING APPARATUS.

Specification of Letters Patent.

Application filed December 6, 1913. Serial No. 804,998.

To all whom it may concern:

Be itknown that I, Hueo DICKE, a subject of the German Emperor, and aresident of Berlin-Wilmersdorf, Germany, have invented certain new anduseful Improvements in Gas-Purifying Apparatus, of which the followingis a specification.

This invention relates to improvements in purifying apparatus forgenerator gas, water gas and the like.

In the manufacture of hydrogen gas by alternate reduction of iron oresby means of reducing gases, and oxidation by means of steam, on a largescale, it has been found that it is a very great drawback that when thereducing gases which are generally con stituted by generator gas orwater gasact on the iron ores immediately after their generation, so asto utilize their heat, the sulfur compounds which constitute impuritiesin the said gases and the soot, carried away by the latter, render theiron ores to be reduced, so impure that within a short time theefiiciency of the ores is considerably affected and it becomes necessaryfrequently to renew them. Apart from the high consumption of iron ores,every time the reducing vessels are recharged an interruption in theworking is involved. These drawbacks are obviated by the use of thepurifier according to this invention, which in a simple,

thorough and economical manner, removes while they are still hot, allthe impurities they contain, such as ashes and gaseous sulfur compounds.To that end, hot reduction gases coming from the generator, are causedto pass within the purifier first through a porous wall, and thenthrough iron turnings or other pieces of metal sitable for absorbingsulfur. The porous wall keeps back the soot carried while the ironturnings heated by the hot reduction gases absorb sulfur compounds. Asthe efiiciency of ron turnings would also be affected by soot, if t cameinto contact therewith, the pur1fier. 1s constructed so that the soot isremoved from the current of gas before the latter comes into contactwith the hot iron turnings. This is effected in a simple manner in thenewpurifier by providing for the iron turnings a retort-like vessel, thelateral walls of which are made of porous material. Further, the gasesflowing into the purifier, first from the reducing gases,

enter a hollow cylinder surrounding the retort, and after filling thiscylinder, pass through the porous wall of the retort and then throughthe iron turnings.

The casing or jacket constituting part of the hollow cylinder, isfurther made in such a manner as to avoid as much as possible the hotgases from the generator giving up any of their heat. As however theheat of the reduction gasesis sometimes insuflicient for heating theiron turnings to that tempera-- ture at which they can absorb sulfurcompounds, an air supply pipe, which can be shut off to throttle bloweropens into the purifier inlet. On the air entering the purifier, the hotgenerator gas is ignited, and heats the iron turnings to a hightemperature.

The vessel for receiving the iron turnings, is further provided with atop and bottom cover, so that the purifier can be filled with ironturnings or emptied within a short time.

For the purpo of explaining the invention an example embodying the samehas been shown in the accompanying drawing, in which my improvedapparatus is shown in vertical longitudinal section.

In the example shown in the drawing, my improved apparatus consists ofan outer casing 2 inclosing an inner casing or vessel 4 in the form of aretort the wall 5 of which is made of a suitable porous material, andwhich communicates through an outlet 12 with the place 'of use, such asa reducing vessel. Between the outer and inner casings a chamber 3' isprovided which has an inlet 1 connected with a generator .for reducinggas or the like. The vessel 4 is closed in an air tight manner at eitherend by closin devices 6 and 7 iron turnings are intro uced at the top ofthe vessel 4, and after being saturated with sulfur compounds aredischarged at the bottom. The gas filling the hollow cylinder 3, isforced to pass through the porous wall 5 of the vessel 4 which 'holdsback the soot carried from the generator, so

Patented Feb. 23, 1915.

the current of air from a that the soot collects at the bottom of the 8,and gives off to the latter its sulfur compounds. In order to raise thepurifier 2 to the required temperature quickly when starting and also tomaintain its temperature during working at the high level required forthe absorption of sulfur by the iron shavings 8, the hollow cylinder 3is further provided with an air pipe 10 coming from a blower and openingnear the mouth of the conduit 1. The supply of combustion air to thepurifier 3 can be regulated by means of a valve or cock 11. From thevessel 4, the gas passes in a purified state into the conduit 12, andfrom the latter into the reducing vessel which is preferably arrangedimmediately behind it.

I claim:

1. A purifier for separating soot, dust, and sulfur compounds fromgenerator gas, water gas, and the like, comprising a vessel having anoutlet and a Wall of porousmaterial, and adapted to receive a materialsuitable for absorbing sulfur compounds, a chamber arrangedconcentrically with said vessel and communicating with a supply ofhotgases to be purified, and means for conveymg a supply of air forsupporting combustion to said chamber.

2. A purifier for separating soot, dust, and sulfur compounds fromgenerator gas, water gas, and. the like, comprising a vessel having anoutlet and a wall of porous material, and adapted to receive a materialsuitable for absorbing sulfur compounds, a chamber arrangedconcentrically with said vessel and communicating with a supply of 9 hotgases to be purified, means for conveying a supply of air for supportingcombustion to said chamber, and means to regulate said supply of air.

In testimony whereof, I have signed this specification in the presenceof two subscribing Witnesses.

HUGO DICKE. Witnesses:

WoLnEMAR HAUPT, HENRY HASPER.

